20 EQUINE ANATOMY. 



Phalanges. 



1. Os suFFRAcuNis. — Bodj lias two faces; anterior 

 face : slightly rough ; posterior face : flat. Has two 

 lateral borders. Superior extremity : two glenoid cav- 

 ities, median grove ; inferior extremity : two condyles, 

 median groove. 



Development : two nuclei of ossification. 



2. Os CORONA. — 8ix faces; anterior face: slightly 

 rough ; posterior face : elongated f acette ; lateral face ; 

 for muscular insertions ; superior face : two glenoid 

 cavities, median eminence ; inferior face : two condyles, 

 median groove. 



Development: one nucleus of ossification. 



3. Coffin or pedal bone. — Three faces; anterior 

 face : preplantar fissure, patilobe eminence : inferior 

 face : semilunar crest, sole, plantar fissure, plantar 

 foramen ; superior face : glenoid cavities, antero- 

 posterior eminence. Three borders ; superior border ; 

 pyramidal eminence, f acettes of insertion ; anterior 

 border : sharp and perforated ; posterior border : 

 f iCettes for navicular bone. Two extremities with 

 basilar process above, retrosal below, notch or foramen 

 between these. 



Development : one nucleus of ossification. 

 Appendages : Lateral Cartilages. 



